Excuse me for being a bit crazy even trying the stuff I have. An issue I have with this build of 9.0.2 and it seems other users have elsewhere in similar versions of amlogic libreelec. The amcodec hardware acceleration doesn't like certain streams and will generally lock-up the system on seek or stop (BBC iPlayer addon being an example), so I've been trying to figure out how to fix it.
I took a probably unusual approach of post patching the system by modifying SYSTEM archive in the tar update with an (I assumed) newer version of libamcodec.so from the wetek play 9.2.8 builds (uses the same SoC), but turns out there hasn't been any fix or change in that module and any difference may be just down to the compilation.
So I've hunted through the source to see what patching had been applied to fix this issue and it's really not clear, nearest I've gotten is a change to the modify display rate in tvout, but I have no idea if this is the fix or not.
If any one knows what the exact fix is, I'd really like to know and will likely attempt to append a .patch file to the projects source here and re-roll an updated image.
if anyone is interested, un/repacking the SYSTEM can be done with (tested with lubuntu 18.04);
<unpack SYSTEM file from update tar to home/Downloads>
sudo apt-get install squashfs-tools
cd ~/Downloads
unsquashfs -d ./SYSTEM_modified -f SYSTEM
<modify contents of SYSTEM_modified folder with changes, .so files exist in /usr/lib>
mksquashfs ./SYSTEM_modified SYSTEM -noappend -comp gzip
md5sum ./SYSTEM > ./SYSTEM.md5
<new SYSTEM files resides in home/Downloads, edit SYSTEM.md5 with correct path /target and repack into update tar>